Presence of 0.3 to 0.5% arsenic in copper increases its____________________?

Related Mcqs:

1. Presence of high phosphorous in cast iron increases its____________________?

   A. Fluidity
   B. Melting point
   C. Shrinkage
   D. Tensile strength

2. Presence of cobalt in steel improves its____________________?

   A. Cutting ability
   B. Corrosion resistance
   C. Tensile strength
   D. None of these

3. Presence of even very minute amount (say 0.1%) of ______________ in copper, reduces its electrical conductivity very seriously?

   A. Bismuth
   B. Arsenic
   C. Antimony
   D. Both B. and C.

4. Presence of even 0.005% of _____________ in copper makes it highly brittle, rendering it useless for wire-drawing?

   A. Oxygen
   B. Arsenic
   C. Antimony
   D. Bismuth

5. Ability of a material to absorb energy in deformation in the plastic range is characterised as its____________________?

   A. Ductility
   B. Toughness
   C. Creep
   D. Resilience

6. __________________ does not contain copper as an alloying element?

   A. Nichrome
   B. Manganin
   C. Perminvar
   D. Monel metal

7. Which of the following is not an alloy of copper ?

   A. Muntz metal
   B. Admiralty gun metal
   C. German silver
   D. Pewter metal

8. Addition of nickel to copper improves its_________________?

   A. Machinability
   B. Ductility
   C. Strength
   D. Hardness

9. Maximum consumption of copper is in__________________?

   A. Utensil manufacture
   B. Electrical industry
   C. Industrial equipment manufacture
   D. Small scale industries

10. Nickel and copper are the basic constituents of__________________?

    A. Hastelloy
    B. Monel metal
    C. German silver
    D. Inconel